Boiler-tube cleaner.



J. ZILLIOX. BOILER TUBE CLEANER.

APPLICATION FILED OCT. 28, 1910. 1,058,932. Patented Apr. 15,1913.

2 SHEETS-SHEET 1.

if 271 M$,, f. w Mg J. ZILLIOX.

, BOILER TUBE CLEANER. APPLIOATION FILED 0012s. 1910.

1,058,932. I Patented Apr. 15, 1913.

2 SHEETS-SHEET 2.

JOHN ZILLIOX, 0F BUFFALO, NEW YORK.

BOILER-TUBE CLEANER.

Specification of Letters Patent.

Patented Apr. 15, 1913.

Application filed. October 28, 1910. Serial No. 589,512.

To all whom it may concern Be it known that I, JOHN ZILLIOX, a citizenof the United States, residing at Buffalo, in the county of Erie andState of New York, have invented new and useful Improvements inBoiler-Tube Cleaners, of which the following is a specification.

This invention relates to a boiler tube cleaner of the type having avibratory hame mer or scale loosener which acts upon the inner side ofthe tube for breaking and detaching any scale adhering to its inner. orits outer side.

One of the objects of the invention is the production of a cleaner ofthis class which will detach the scale from all sides of boilertubeswithout the necessity of rotating the tool therein, thus rendering thetool more convenient in use.

A further object is to simplify the construction and reduce the cost ofsuch cleaners, and to increase their cleaning capacity, so that thetubes can be cleaned in correspondingly less time.

In the accompanying drawings consisting of 2 sheets: Figure 1 1s a sideelevation of the improved cleaner arranged in a. boiler tube. Fig, 2 isa longitudinal central section thereof. Fig. 3 is a front elevation 0the same, partly in section. Fig. 4 is a cross section on line t-5, Fig.2, looking toward the right. Fig. 5 is a section on the same linelooking toward the left. Fig. 6 is a cross section on line 66, Fig. 2.

Similar letters of reference indicate corresponding parts throughout theseveral views.

A indicates a boiler-tube.

13 indicates the shell or casing of the cleaner which is preferablycylindrical and of the proper size to freely enter a boiler tube. It isprovided at its rear end with a head I) having a central inlet orconnection 6 for the attachment of a pipe C by which steam or othermotive fluid is supplied to the tool. Secured in the shell is acylindrical head or block D which extends rearwardly from the front endof the shell and terminates short of its head 6 to leave an inlet orvalve chamber E in the rear portion of the shell which receives themotive fluid from the supply pipe O. In the front portion of the head Dis formed a transverse piston-chamber F in which a piston F is arranged.Opposite ends of this chamber are connected with the valve-chamber E bymoves in suitable guides H :struct1on shown in the drawings, the valve1s reciprocated with the piston by a screwports g, 9 formed in the rearportion of the head D and controlled by a valve H, preferably of thesliding type. This valve In the conthreaded rod or stem z secured in atransverse threaded opening of the piston. This.

rod projects through. a slot 7' in the rear wall of the piston chamberand into a socket k formed in the front side of the slidevalve H. Portsh, h extending through the valve on opposite sides of its socket,cooperate respectively with the ports 9, in such a manner as to connectthe en s of the piston chamber alternately with the valve chamber E. Asshown in Fig. 6, and

by dotted lines in .Fig. 2, the upper ports .h of the valve are inregister with the corresponding port 9 of the piston-chamber while thelower ports 72, and break register, thus admitting the motive fluidabove the piston and driving it downwardly. The slide-valve is therebyshifted in the same direction until its lower ports 72, come intoregister with the corresponding ports 9 of the piston-chamber when themovement of the piston and the valve is reversed. The

motive fluid is exhausted through ports Z, Z extending through the frontwall of the piston-chamber near opposite ends of the latter. 7

M, M indicate a pair of hammers or scalelooseners arranged at the frontend of the cleaner. These hammers are arranged to vibrate or oscillatetransversely of the implement, and for this purpose are preferablypivoted to the front end of the head D by bolts an arranged lengthwiseof the head and passing through perforated ears m formed centrally onthe outer sides of the hammers. The hammers face each other and arepreferably double-headed or shown, this is accomplished by a cross-heador knuckle n formed on or rigidly secured to the front end of thepiston-rod z' and engaging the walls of sockets or recesses 0 formed inthe opposing sides of the hammers, substantially in line with theirpivots m, as shown in Figs. 2 and 3. The front portion of the piston rodplays in a slot 7) formed in the front wall of the piston chamberlengthwise of the latter. By this construction,the cross-head aalternately strikes the upper and lower walls of the hammerrecesses 0,oscillating the hammers in an obvious manner and causing them to strikethe tube at two points at one extremity of their stroke, as shown byfull lines in Fig. 3, and at two opposite points at the other extremityof their stroke, as shown by dotted lines in said figure.

By constructing the cleaner in this man ner, the blows are distributedaround the tube and yet delivered so closely together as to break up anddetach all portions of the scale by simply pushing the cleaner throughthe tube. Rotation of the cleaner in the tube is therefore unnecessary,obviating the labor and inconvenience of this operation.

It will be noted that by the construction shown, the hammers deliver asquare blow against the tube, effectually detaching the scale therefrom.

The tool, while simple and inexpensive in construction, has acomparatively large cleaning capacity owing to the use of the two duplexhammers effecting a material saving in the time required to clean thetubes.

The pivot-bolts m also serve to removably secure the block or head D inthe casing B, these bolts passing through the head on opposite sidesofthe piston-chamber and their nuts m bearing against the rear end ofthe casing. The latter is provided with an internal shoulder g againstwhich the head D is clamped by said bolts.

I claim as my invention:

1. A boiler-tube cleaner comprising a casing, a pair of duplex hammersmovable transversely to the axis of the casing and arranged to travellaterally beyond the eas- 1ngat both ends of their stroke, whereby thehammers are adapted to strike a boilertube at four different points inits circumference, and means for actuating the hammers.

2. A boiler-tube cleaner comprising a casing, a pair of opposing hammerspivoted to oscillate transversely to the axis of the easing, each hammerbeing provided on opposite sides of its pivot with impact heads adaptedto strike opposite portions of a boiler-tube, and means for actuatingthe hammers.

3. A boiler-tube cleaner having a pair of opposing double-headed hammersmovable transversely thereof, and a single actuator engaging both ofsaid hammers.

4. A boiler-tube cleaner having a pair of opposing duplex hammerspivoted tooscillate transversely thereof and provided with recesses intheir opposing sides, and an actuating member movable transversely ofthe cleaner and engaging said recesses.

5. A boiler tube cleaner comprising a casing, a pivot carried by thecasing and arranged lengthwise thereof, a hammer mounted on said pivot,a piston movable transversely in the casing, and a rod rigidlysecured tothe piston, arranged lengthwise of the casing and engaging said hammerfor actuating it.

6. A boiler-tube cleaner comprising a casing provided in its rearportion with a fluid inlet chamber and on the front side of said chamberwith a transverse piston chamber, opposite ends of the latter beingconnected with the inlet chamber by ports, a slidevalve in the inletchamber controlling said ports, a hammer movable transversely of thecasing and pivoted to the front end thereof, and an actuating rodrigidly secured to the piston and extending beyond the front and rearsides thereof, the rear end of said rod engaging said valve and itsfront end engaging said hammer.

\Vitness my hand this 26th day of October, 1910.

JOHN ZILLIOX.

Witnesses:

C. F. GEYER, E. M. GRAHAM.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of latents.

